Home / 4,919.37-7,378.92-1,221.53

Finding the Fourth Proportional to 4,919.37, 7,378.92 and 1,221.53

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Solution

The fourth proportional to 4,919.37, 7,378.92 and 1,221.53 is: 1,832.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,919.37 : 7,378.92 = 1,221.53 : x
  2. Step 2: Convert to fraction form
    4,919.37/7,378.92 = 1,221.53/x
  3. Step 3: Cross multiply
    4,919.37x = 7,378.92 × 1,221.53
  4. Step 4: Simplify right side
    4,919.37x = 9,013,535.25
  5. Step 5: Solve for x
    x = 9,013,535.25/4,919.37
  6. Step 6: Final answer
    x = 1,832.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.